US3059158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protected semiconductor device and method of making it
Assignee: AT&T Inc
•
Filing: 1959-02-09
•
Granted: 1962-10-16
•
Expires: 1979-02-09
Abstract
No abstract record available.
Inventors
- 👤 Edward I Doucette
- 👤 Robert M Ryder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:54
CPC Classifications
H; H10; H10W; H10W72/00; H10W72/20; H10D; H10D99/00; H10W76/00; H10W76/10; H10W76/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2874340A
Cited
US2736847A
Cited
US2891160A
Cited
US2887628A
Cited
US2959718A
Cited
US2946935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |